IBM Power Systems 8001-22C, Manual

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v Limitation on the number of supported drives if the 8001-22C system has one or two GPU accelerators
(feature code EKAJ or EKAZ):
– If your 8001-22C system with feature code EKB1 or EKB5 has feature code EKAJ or EKAZ, and if
the system has storage adapters (feature codes EKEA or EKEB), the system can support up to eight
3.5-inch drives. The drives must be installed into the bottom two drive bay rows. The drives cannot
be installed into the top drive bay row.
– If your 8001-22C system with feature code EKB1 or EKB5 has feature code EKAJ or EKAZ, but has
no storage adapters, the system can support up to six 3.5-inch drives. The drives must be installed
into the bottom two drive bay rows in the leftmost positions. The drives cannot be installed into the
top drive bay row nor into the rightmost positions.
– The ambient temperature must not be more than 25°C (77°F). Reduce the maximum allowable
dry-bulb temperature 1°C per 175 m above 950 m. IBM recommends a temperature range of 18°C -
27°C (64°F - 80.6°F). The system limits the 8-core POWER8 processor to 240 W.
– The default Linux governor is “on-demand”, which results in the CPU going to turbo frequency
when the workload demands and the power and cooling parameters allow. The CPU can require up
to 250W at turbo frequency and high utilization. For the cases described here which show less than
250W cooling capability, you might see the indicator “Performance Lags” in the system event log,
when running a demanding workload in “on-demand” mode. That means that the maximum turbo
frequency cannot be held all the time.
Procedure
1. Attach the electrostatic discharge (ESD) wrist strap.
Attention:
v Attach an electrostatic discharge (ESD) wrist strap to the front ESD jack, to the rear ESD jack, or to
an unpainted metal surface of your hardware to prevent the electrostatic discharge from damaging
your hardware.
v When you use an ESD wrist strap, follow all electrical safety procedures. An ESD wrist strap is
used for static control. It does not increase or decrease your risk of receiving electric shock when
using or working on electrical equipment.
v If you do not have an ESD wrist strap, just prior to removing the product from ESD packaging
and installing or replacing hardware, touch an unpainted metal surface of the system for a
minimum of 5 seconds.
2. Unlock the drive bay handle (B) by pushing in the handle release (A) as shown in Figure 5 on page
11. The handle (B) snaps out towards you. If the handle does not snap out all the way, the drive
does not slide out of the system. If the drive does not match the serial number you wrote down in
the previous step, reinstall the drive in the bay you removed it from, and check the other drive bays.
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Power Systems: Installing the IBM Power System S822LC for Big Data (8001-22C)